﻿//    Copyright 2014 LuoZhihui
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//      http://www.apache.org/licenses/LICENSE-2.0
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.

#region  导入名称空间

using System.Collections.Generic;
using LotteryEngine.Infrastructure.Domain;
using LotteryEngine.Infrastructure.Querying;
using LotteryEngine.Repository.NHibernate.SessionStorage;
using NHibernate;

#endregion

namespace LotteryEngine.Repository.NHibernate.Repositories
{
	public abstract class Repository<T, TEntityKey> where T : IAggregateRoot
	{
		private readonly INHSessionFactory _sessonFactory;

		protected Repository(INHSessionFactory sessonFactory)
		{
			_sessonFactory = sessonFactory;
		}

		public void Add(T entity)
		{
			_sessonFactory.CurrentSession.Save(entity);
		}

		public void Remove(T entity)
		{
			_sessonFactory.CurrentSession.Delete(entity);
		}

		public void Save(T entity)
		{
			_sessonFactory.CurrentSession.SaveOrUpdate(entity);
		}

		public T FindBy(TEntityKey id)
		{
			return _sessonFactory.CurrentSession.Get<T>(id);
		}

		public IEnumerable<T> FindAll()
		{
			var criteriaQuery =
				_sessonFactory.CurrentSession.CreateCriteria(typeof (T));

			return (List<T>) criteriaQuery.List<T>();
		}

		public IEnumerable<T> FindAll(int index, int count)
		{
			var criteriaQuery =
				_sessonFactory.CurrentSession.CreateCriteria(typeof (T));

			return (List<T>) criteriaQuery.SetFetchSize(count)
				.SetFirstResult(index).List<T>();
		}

		public IEnumerable<T> FindBy(Query query)
		{
			var criteriaQuery =
				_sessonFactory.CurrentSession.CreateCriteria(typeof (T));

			AppendCriteria(criteriaQuery);

			query.TranslateIntoNHQuery<T>(criteriaQuery);

			return criteriaQuery.List<T>();
		}

		public IEnumerable<T> FindBy(Query query, int index, int count)
		{
			var criteriaQuery =
				_sessonFactory.CurrentSession.CreateCriteria(typeof (T));

			AppendCriteria(criteriaQuery);

			query.TranslateIntoNHQuery<T>(criteriaQuery);

			return criteriaQuery.SetFetchSize(count).SetFirstResult(index).List<T>();
		}

		public virtual void AppendCriteria(ICriteria criteria)
		{
		}
	}
}